Create your own at Storyboard ThatThe plants start photosynthesis, and take in carbon dioxide to make sugars. Animals eat the plants and are then putting carbon into their bodies. Plants also release some carbon. Carbon cycle. BY: Elijah Rock falls on animals that took in carbon. Animals die and carbon goes into the soil. Soil releases the carbon and dead animals slowly are turned into fossil fuels. Ex. Coal. Humans burn fossil fuels which releases the carbon back into the air. Then the carbon goes back into the air and the cycle starts again.